Here is some basic information about Buddleja americana and a list of ethnobotanical uses which includes medicinal uses and other uses of Buddleja americana.
Buddleja americana basic info
Scientific Name: Buddleja americana L..
Buddleja americana is the most widespread of all the Buddleja species native to the Americas, its range extending south from Tamaulipas, Mexico, through Central America and much of the West Indies into South America, reaching eastward to Venezuela, westward as far as the Galapagos, and south to Bolivia. - for more info about Buddleja americana See link
Ethnobotanical and folk medicinal uses of Buddleja americana
*The information in this list is based on the ethnobotanical data in Dr. Duke's Phytochemical and Ethnobotanical Databases.
Dr. Duke does not recommend using this information for self diagnosis or self medication. - See link
Buddleja americana in other websites
Buddleja americana common names, economics importance, distributional range and more in the USDA GRIN website - See link
Search PubMed (US National Library of Medicine National Institutes of Health) for academic researches with the search term Buddleja americana - See link
See if there is something in Youtube on the term Buddleja americana - See link